Home / 81,787.40-122,753.10-48,465.80

Finding the Fourth Proportional to 81,787.40, 122,753.10 and 48,465.80

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Solution

The fourth proportional to 81,787.40, 122,753.10 and 48,465.80 is: 72,741.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,787.40 : 122,753.10 = 48,465.80 : x
  2. Step 2: Convert to fraction form
    81,787.40/122,753.10 = 48,465.80/x
  3. Step 3: Cross multiply
    81,787.40x = 122,753.10 × 48,465.80
  4. Step 4: Simplify right side
    81,787.40x = 5,949,327,193.98
  5. Step 5: Solve for x
    x = 5,949,327,193.98/81,787.40
  6. Step 6: Final answer
    x = 72,741.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.